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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/graph/CompoundRankSorter.d @ 16:dbfb303e8fb0

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first complete successful compile (win-only)
author Frank Benoit <benoit@tionex.de>
date Wed, 18 Mar 2009 08:56:47 +0100
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.draw2d.graph.CompoundRankSorter;
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14
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15 import java.lang.all;
16
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16 import java.util.HashMap;
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17 import java.util.Iterator;
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18 import java.util.Map;
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19 import org.eclipse.draw2d.graph.RankSorter;
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20 import org.eclipse.draw2d.graph.Subgraph;
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21 import org.eclipse.draw2d.graph.Node;
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22 import org.eclipse.draw2d.graph.DirectedGraph;
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23 import org.eclipse.draw2d.graph.Rank;
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24 import org.eclipse.draw2d.graph.NestingTree;
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25 import org.eclipse.draw2d.graph.CompoundDirectedGraph;
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26 import org.eclipse.draw2d.graph.Edge;
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27 import org.eclipse.draw2d.graph.LocalOptimizer;
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28
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29 /**
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30 * Sorts nodes in a compound directed graph.
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31 * @author Randy Hudson
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32 * @since 2.1.2
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33 */
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34 class CompoundRankSorter : RankSorter {
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35
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36 static class RowEntry {
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37 double contribution;
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38 int count;
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39 void reset() {
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40 count = 0;
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41 contribution = 0;
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42 }
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43 }
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44
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45 static class RowKey {
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46 int rank;
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47 Subgraph s;
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48 this() { }
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49 this(Subgraph s, int rank) {
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50 this.s = s;
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51 this.rank = rank;
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52 }
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53
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54 public override int opEquals(Object obj) {
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55 RowKey rp = cast(RowKey)obj;
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56 return rp.s is s && rp.rank is rank;
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57 }
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58
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59 public override hash_t toHash() {
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60 return s.toHash() ^ (rank * 31);
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61 }
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62 }
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63
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64 bool init_;
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65 RowKey key;
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66
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67 Map map;
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68
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69 public this(){
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70 key = new RowKey();
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71 map = new HashMap();
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72 }
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73
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74 void addRowEntry(Subgraph s, int row) {
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75 key.s = s;
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76 key.rank = row;
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77 if (!map.containsKey(key))
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78 map.put(new RowKey(s, row), new RowEntry());
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79 }
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80
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81 protected void assignIncomingSortValues() {
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82 super.assignIncomingSortValues();
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83 pullTogetherSubgraphs();
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84 }
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85
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86 protected void assignOutgoingSortValues() {
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87 super.assignOutgoingSortValues();
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88 pullTogetherSubgraphs();
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89 }
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90
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91 void optimize(DirectedGraph g) {
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92 CompoundDirectedGraph graph = cast(CompoundDirectedGraph)g;
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93 Iterator containment = graph.containment.iterator();
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94 while (containment.hasNext())
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95 graph.removeEdge(cast(Edge)containment.next());
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96 graph.containment.clear();
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97 (new LocalOptimizer())
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98 .visit(graph);
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99 }
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100
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101 private void pullTogetherSubgraphs() {
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102 if (true)
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103 return;
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104 for (int j = 0; j < rank.count(); j++) {
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105 Node n = rank.getNode(j);
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106 Subgraph s = n.getParent();
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107 while (s !is null) {
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108 getRowEntry(s, currentRow).reset();
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109 s = s.getParent();
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110 }
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111 }
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112 for (int j = 0; j < rank.count(); j++) {
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113 Node n = rank.getNode(j);
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114 Subgraph s = n.getParent();
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115 while (s !is null) {
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116 RowEntry entry = getRowEntry(s, currentRow);
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117 entry.count++;
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118 entry.contribution += n.sortValue;
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119 s = s.getParent();
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120 }
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121 }
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122
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123 double weight = 0.5;// * (1.0 - progress) * 3;
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124
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125 for (int j = 0; j < rank.count(); j++) {
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126 Node n = rank.getNode(j);
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127 Subgraph s = n.getParent();
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128 if (s !is null) {
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129 RowEntry entry = getRowEntry(s, currentRow);
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130 n.sortValue =
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131 n.sortValue * (1.0 - weight) + weight * entry.contribution / entry.count;
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132 }
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133 }
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134 }
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135
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136 double evaluateNodeOutgoing() {
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137 double result = super.evaluateNodeOutgoing();
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138 // result += Math.random() * rankSize * (1.0 - progress) / 3.0;
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139 if (progress > 0.2) {
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140 Subgraph s = node.getParent();
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141 double connectivity = mergeConnectivity(s, node.rank + 1, result, progress);
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142 result = connectivity;
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143 }
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144 return result;
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145 }
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146
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147 double evaluateNodeIncoming() {
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148 double result = super.evaluateNodeIncoming();
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149 // result += Math.random() * rankSize * (1.0 - progress) / 3.0;
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150 if (progress > 0.2) {
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151 Subgraph s = node.getParent();
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152 double connectivity = mergeConnectivity(s, node.rank - 1, result, progress);
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153 result = connectivity;
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154 }
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155 return result;
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156 }
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157
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158 double mergeConnectivity(Subgraph s, int row, double result, double scaleFactor) {
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159 while (s !is null && getRowEntry(s, row) is null)
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160 s = s.getParent();
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161 if (s !is null) {
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162 RowEntry entry = getRowEntry(s, row);
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163 double connectivity = entry.contribution / entry.count;
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164 result = connectivity * 0.3 + (0.7) * result;
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165 s = s.getParent();
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166 }
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167 return result;
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168 }
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169
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170 RowEntry getRowEntry(Subgraph s, int row) {
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171 key.s = s;
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172 key.rank = row;
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173 return cast(RowEntry)map.get(key);
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174 }
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175
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176 void copyConstraints(NestingTree tree) {
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177 if (tree.subgraph !is null)
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178 tree.sortValue = tree.subgraph.rowOrder;
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179 for (int i = 0; i < tree.contents.size(); i++) {
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180 Object child = tree.contents.get(i);
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181 if (auto n = cast(Node)child ) {
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182 n.sortValue = n.rowOrder;
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183 } else {
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184 copyConstraints(cast(NestingTree)child);
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185 }
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186 }
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187 }
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188
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189 public void init(DirectedGraph g) {
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190 super.init(g);
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191 init_ = true;
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192
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193 for (int row = 0; row < g.ranks.size(); row++) {
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194 Rank rank = g.ranks.getRank(row);
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195
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196 NestingTree tree = NestingTree.buildNestingTreeForRank(rank);
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197 copyConstraints(tree);
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198 tree.recursiveSort(true);
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199 rank.clear();
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200 tree.repopulateRank(rank);
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201
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202 for (int j = 0; j < rank.count(); j++) {
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203 Node n = rank.getNode(j);
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204 Subgraph s = n.getParent();
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205 while (s !is null) {
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206 addRowEntry(s, row);
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207 s = s.getParent();
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208 }
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209 }
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210 }
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211 }
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212
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213 protected void postSort() {
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214 super.postSort();
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215 if (init_)
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216 updateRank(rank);
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217 }
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218
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219 void updateRank(Rank rank) {
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220 for (int j = 0; j < rank.count(); j++) {
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221 Node n = rank.getNode(j);
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222 Subgraph s = n.getParent();
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223 while (s !is null) {
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224 getRowEntry(s, currentRow).reset();
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225 s = s.getParent();
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226 }
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227 }
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228 for (int j = 0; j < rank.count(); j++) {
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229 Node n = rank.getNode(j);
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230 Subgraph s = n.getParent();
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231 while (s !is null) {
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232 RowEntry entry = getRowEntry(s, currentRow);
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233 entry.count++;
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234 entry.contribution += n.index;
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235 s = s.getParent();
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236 }
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237 }
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238 }
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239
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240 }